TECHNICAL FIELD
[0001] The present invention relates to a receptacle, a printed wiring board, and to a electronic
device including the receptacle and the printed wiring board.
BACKGROUND ART
[0002] Techniques in which digital signals are transmitted at high speeds between electronic
devices (for example, Audio-Visual devices, mobile terminals, and so on) via interfaces
based on standards such as HDMI (High-Definition Multimedia Interface)®, USB (Universal
Serial Bus), and so on have come into wide use in recent years.
Such interfaces are configured of a receptacle mounted on a mounting face of a printed
wiring board and a plug that is inserted into the receptacle.
The receptacle includes a terminal insulating board that fits into the plug, multiple
bottom terminals, and multiple top terminals. The terminal insulating board has a
bottom face provided on the side toward the printed wiring board and a top face provided
on the opposite side of the bottom face. Each of the bottom terminals is connected
to the bottom face of the terminal insulating board and the printed wiring board.
Each of the top terminals, meanwhile, is connected to the top face of the terminal
insulating board and the printed wiring board.
The printed wiring board includes multiple forward-row lands, multiple rear-row lands,
and wires formed on the mounting face. Each of the top terminals is connected to a
respective forward-row land. Each of the bottom terminals, meanwhile, is connected
to a respective rear-row land. The wires extend toward the inside of the mounting
face from the forward-row lands and the rear-row lands.
[0003] Here, in order to simplify the terminal structure, it is common for the multiple
top terminals to be adjacent to each other and to be connected to the printed wiring
board at a location that is further from the terminal insulating board than the multiple
bottom terminals (for example, see Patent Citation 1). Accordingly, the multiple forward-row
lands are provided adjacent to each other at a location that is further from the terminal
insulating board than the multiple rear-row lands.
DISCLOSURE OF INVENTION
TECHNICAL PROBLEM
[0005] However, to reduce the surface area of the wires on the mounting face, it is necessary
to pass the wire that extends from a single rear-row land between two adjacent forward-row
lands. For this reason, it is necessary to employ a printed wiring board in which
fine wiring patterns can be formed at high densities, which is problematic in that
it leads to an increase in the cost of manufacturing the printed wiring board.
Having been conceived in light of the aforementioned problem, it is an object of the
present invention to provide a receptacle, a printed wiring board, and an electronic
device capable of suppressing an increase in the cost of manufacturing the printed
wiring board.
TECHNICAL SOLUTION
[0006] A receptacle according to an aspect of the present invention is a receptacle that
is mounted on a printed wiring board and into which a plug is inserted, and includes:
a housing configured to be mounted on a printed wiring board, including an opening
into which the plug is inserted; a terminal insulating board including a top face
and a bottom face opposite the top face, the terminal insulating board being disposed
inside the housing with the bottom face facing the printed wiring board; a first top
terminal including a first top face connection portion connected to the top face and
a first portion connected to the printed wiring board, the first top terminal being
disposed along a predetermined direction when viewed from above the top face; a second
top terminal including a second top face connection portion connected to the top face
at a little distance from the first top face connection portion and a second portion
connected to the printed wiring board at a distance from the first portion in the
predetermined direction; and a bottom terminal including a bottom face connection
portion connected to the bottom face on the opposite side of the first top face connection
portion and the second top face connection portion and a third portion connected to
the printed wiring board at a distance from the first portion in the predetermined
direction.
[0007] A printed wiring board according to an aspect of the present invention is a printed
wiring board onto which a receptacle is mounted, and includes: a main substrate having
a mounting face configured to support the receptacle; a first land disposed on the
mounting face along a predetermined direction; a second land disposed on the mounting
face at a distance from the first land in the predetermined direction; and a third
land disposed on the mounting face at a distance from the first land in the predetermined
direction and located between the first land and the second land in a perpendicular
direction.
An electronic device according to an aspect of the present invention includes a receptacle
into which a plug is inserted and a printed wiring board onto which the receptacle
is mounted. The receptacle has: a housing configured to be mounted on a printed wiring
board, including an opening into which the plug is inserted; a terminal insulating
board including a top face and a bottom face opposite the top face, the terminal insulating
board being disposed inside the housing with the bottom face facing the printed wiring
board; a first top terminal including a first top face connection portion connected
to the top face and a first portion connected to the printed wiring board, the first
top terminal being disposed along a predetermined direction when viewed from above
the top face; a second top terminal including a second top face connection portion
connected to the top face at a little distance from the first top face connection
portion and a second portion connected to the printed wiring board at a distance from
the first portion in the predetermined direction; and a bottom terminal including
a bottom face connection portion connected to the bottom face on the opposite side
of the first top face connection portion and the second top face connection portion
and a third portion connected to the printed wiring board at a distance from the first
portion in the predetermined direction. The printed wiring board has: a main substrate
having a mounting face configured to support the receptacle; a first land disposed
on the mounting face and that is connected to the first portion; a second land disposed
on the mounting face and that is connected to the second portion; and a third land
that disposed on the mounting face and that is connected to the third portion.
ADVANTAGEOUS EFFECTS
[0008] According to the present invention, it is possible to provide a receptacle, a printed
wiring board, and an electronic device capable of suppressing an increase in the cost
of manufacturing the printed wiring board.
BRIEF DESCRIPTION OF DRAWINGS
[0009]
Fig. 1 is a perspective view illustrating the configuration of an interface 10 according
to a first embodiment.
Fig. 2 is a plan view illustrating a receptacle 12 according to the first embodiment
as viewed from an opening 12B.
Fig. 3 is a perspective view illustrating the internal configuration of the receptacle
12 according to the first embodiment.
Fig. 4 is a plan view illustrating a printed wiring board 11 according to the first
embodiment as viewed from a mounting face FMNT.
Fig. 5 is an enlarged perspective view of Fig. 3.
Fig. 6 is a plan view illustrating the terminals, lands, and wires shown in Fig. 5
as viewed from a top face FTOP.
Fig. 7 is a perspective view illustrating the internal configuration of a receptacle
12 according to a second embodiment.
Fig. 8 is a plan view illustrating a printed wiring board 11 according to the second
embodiment as viewed from a mounting face FMNT.
Fig. 9 is an enlarged perspective view of Fig. 7.
Fig. 10 is an enlarged perspective view illustrating a pair of signal terminals Tsc- and TSC+ according to a third embodiment.
Fig. 11 is a perspective view illustrating a ground terminal TG1 and a pair of signal terminals TS1+ and TS1- according to a fourth embodiment.
Fig. 12 is a see-through perspective view illustrating a terminal insulating board
12C according to the fourth embodiment.
BEST MODE FOR CARRYING OUT THE INVENTION
[0010] Next, embodiments of the present invention will be described using the drawings.
In the following descriptions of the drawings, identical or similar elements will
be given identical or similar reference numerals. However, the drawings are schematic
in nature and thus there are cases where the illustrated ratios of dimensions and
so on differ from the actual ratios. As such, the specific dimensions should be judged
in consideration of the following descriptions. Furthermore, it goes without saying
that the drawings include elements whose dimensional relationships, ratios, and so
on differ from drawing to drawing.
[First Embodiment]
(Interface Configuration)
[0011] The configuration of an interface according to a first embodiment will be described
with reference to the drawings. The present embodiment will describe an interface
10, based on the HDMI (High-Definition Multimedia Interface)® standard, as an example
of an interface between electronic devices. Note that "electronic device" refers to,
for example, an Audio-Visual device, a mobile terminal, a personal computer, or the
like.
[0012] [0009] Fig. 1 is a perspective view illustrating the configuration of the interface
10 according to the first embodiment. As shown in Fig. 1, the interface 10 is configured
of a printed wiring board 11, a receptacle 12, and a plug 13.
[0013] The printed wiring board 11 is installed within a first electronic device (not shown).
The printed wiring board 11 includes a main substrate 11A and a wire group 11B. The
main substrate 11A has a mounting face F
MNT. The configuration of the printed wiring board 11 will be described later.
[0014] The receptacle 12 is mounted upon the mounting face F
MNT at an edge portion 11
EDG of the printed wiring board 11. The receptacle 12 includes a housing 12A, an opening
12B, a terminal insulating board 12C, and a terminal group 12D. The configuration
of the receptacle 12 will be described later.
[0015] The plug 13 is provided in a second electronic device (not shown). The plug 13 is
electrically connected to the receptacle 12 by inserting the plug 13 into the opening
12B. The plug 13 transmits digital signals between the first electronic device and
the second electronic device.
(Receptacle Configuration)
[0016] Next, the configuration of the receptacle according to the first embodiment will
be described with reference to the drawings. Fig. 2 is a plan view illustrating the
receptacle 12 according to the first embodiment as viewed from the opening 12B. Fig.
3 is a perspective view illustrating the internal configuration of the receptacle
12 according to the first embodiment. Note that the housing 12A has been omitted from
Fig. 3.
[0017] As shown in Figs. 2 and 3, the receptacle 12 includes the housing 12A, the opening
12B, the terminal insulating board 12C, and the terminal group 12D.
[0018] The housing 12A is a container that houses the terminal insulating board 12C and
the terminal group 12D.
[0019] The opening 12B is formed in the housing 12A. The plug 13 is inserted into the opening
12B. Although not shown in the drawings, the opening 12B is exposed through the housing
of the first electronic device.
[0020] The terminal insulating board 12C is a plate-shaped substrate provided within the
housing 12A. The terminal insulating board 12C is fitted into the plug 13. The terminal
insulating board 12C has, as shown in Figs. 2 and 3, a bottom face F
BTM and a top face F
TOP. The bottom face F
BTM is provided on the side toward the mounting face F
MNT. The top face F
TOP, meanwhile, is provided on the opposite side of the bottom face F
BTM.
The terminal group 12D is connected to the terminal insulating board 12C and the printed
wiring board 11 (and to be more specific, to the wire group 11B). The terminal group
12D transmits digital signals between the printed wiring board 11 and the plug 13.
The terminal group 12D has multiple bottom terminals T
BTM and multiple top terminals T
TOP. The bottom terminals T
BTM are, as shown in Fig. 2, disposed in an alternating fashion with respect to the top
terminals T
TOP.
The multiple bottom terminals T
BTM include an open terminal T
OPEN, a ground terminal T
G2, a pair of signal terminals T
S1+ and T
S1-, a ground terminal T
G0, a pair of signal terminals T
SC+ and T
SC-, a ground terminal T
GD, and an SDA terminal T
SDA. Each of the bottom terminals T
BTM is connected to the bottom face F
BTM of the terminal insulating board 12C and the printed wiring board 11.
[0021] As shown in Fig. 3, the bottom terminals T
BTM are provided following the direction in which the plug 13 is inserted into the opening
12B (called an "extension direction" hereinafter). The bottom terminals T
BTM are adjacent to each other in the direction perpendicular to the extension direction
(called the "perpendicular direction" hereinafter). The bottom terminals T
BTM are configured of a plate-shaped metal material that has undergone a bending process.
The multiple top terminals T
TOP include an HPD signal terminal T
HPD, a pair of signal terminals T
S2+ and T
S2-, a ground terminal T
G1, a pair of signal terminals Tso+ and Tso-, a ground terminal T
GC, a CEC terminal T
CEC, an SCL terminal T
SCL, and a power source terminal T
5V. Each of the top terminals T
TOP, meanwhile, is connected to the top face F
TOP of the terminal insulating board 12C and the printed wiring board 11.
As shown in Fig. 3, the top terminals T
TOP are provided following the extension direction. The top terminals T
TOP are adjacent to each other in the perpendicular direction. The top terminals T
TOP are configured of a plate-shaped metal material that has undergone a bending process.
[0022] Here, in the present embodiment, the ground terminal T
G1 and the ground terminal T
GC are formed so as to be longer in the extension direction than the other top terminals
T
TOP. The configurations of the ground terminal T
G1 and the ground terminal T
GC will be described later.
Note that the signal terminals T
S transmit digital signals according to a quasi-differential transmission system such
as TMDS (Transition Minimized Differential Signaling) and so on. As such, the phase
of the digital signal transmitted by the signal terminal T
S1+ is inverted relative to the phase of the signal transmitted by the signal terminal
T
S1-.
Meanwhile, the ground terminals T
G ground corresponding signal terminals T
S. For example, the ground terminal T
G1 grounds the pair of signal terminals T
S1+ and T
S1-.
(Printed wiring board Configuration)
[0023] Next, the configuration of the printed wiring board according to the first embodiment
will be described with reference to the drawings. Fig. 4 is a plan view illustrating
the printed wiring board 11 according to the first embodiment as viewed from the mounting
face F
MNT. Note that in Fig. 4, the opening 12B and the terminal insulating board 12C of the
receptacle 12 are indicated by the double-dot-dash lines.
[0024] The printed wiring board 11 includes the main substrate 11A and the wire group 11B.
The main substrate 11A is a multilayer board having the mounting face F
MNT. The receptacle 12, various components (not shown), and so on are mounted on the
mounting face F
MNT.
The wire group 11B electrically connects the receptacle 12 and the various components.
The wire group 11B transmits digital signals between the receptacle 12 and the various
components. The wire group 11B includes multiple rear-row lands Lr, multiple forward-row
lands Lf, multiple forwardmost-row lands Lm, multiple rearward wires Wr, multiple
forward wires Wf, and multiple ground wires W
G.
The multiple rear-row lands Lr are metal members for connecting the multiple bottom
terminals T
BTM. As shown in Fig. 4, the multiple rear-row lands Lr include four signal terminal
lands L
S. The four signal terminal lands L
S include a pair of signal terminal lands L
S1+ and L
S1- corresponding to the pair of signal terminals T
S1+ and T
S1- and a pair of signal terminal lands L
SC+ and L
SC- corresponding to the pair of signal terminals T
SC+ and T
SC-.
[0025] The multiple forward-row lands Lf are metal members for connecting the multiple top
terminals T
TOP (excluding the ground terminal T
G1 and the ground terminal T
GC). The multiple forward-row lands Lf are, as shown in Fig. 4, further from the edge
portion 11
EDG of the main substrate 11A in the extension direction than the multiple rear-row lands
Lr. To rephrase, the multiple forward-row lands Lf are further from the opening 12B
of the receptacle 12 than the multiple rear-row lands Lr when viewed from above the
mounting face F
MNT.
Here, an interval X
1 between the signal terminal land L
S2- and the signal terminal land L
S0+ is greater than an interval Y
1 between the pair of signal terminal lands L
S2+ and L
S2-. Likewise, an interval X
2 between the signal terminal land L
S0- and a CEC terminal land L
CEC is greater than an interval Y
2 between the pair of signal terminal lands Lso+ and Lso-.
[0026] The multiple forwardmost-row lands Lm are metal members for connecting the ground
terminal T
G1 and the ground terminal T
GC of the multiple top terminals T
TOP. The multiple forwardmost-row lands Lm include a ground terminal land L
G1 and a ground terminal land L
GC. The multiple forwardmost-row lands Lm are, as shown in Fig. 4, further from the
edge portion 11
EDG of the main substrate 11A in the extension direction than the multiple forward-row
lands Lf. In other words, the multiple forwardmost-row lands Lm are further from the
opening 12B of the receptacle 12 than the multiple forward-row lands Lf when viewed
from above the mounting face F
MNT.
The multiple rearward wires Wr are connected to the multiple rear-row lands Lr. Although
not shown in the drawings, the rearward wires Wr are connected to the various components
that are mounted. Each of the rearward wires Wr is disposed between two forward-row
lands Lf.
[0027] The multiple forward wires Wf are connected to the multiple forward-row lands Lf.
Although not shown in the drawings, the forward wires Wf are connected to the various
components that are mounted. The forward wires Wf are disposed facing toward the inside
of the mounting face F
MNT from the forward-row lands Lf.
The multiple ground wires W
G are connected to four ground terminal lands L
G through via wires. Specifically, the multiple ground wires W
G include a ground wire W
G2 connected to a ground terminal land L
G2, a ground wire W
G1 connected to the ground terminal land L
G1, a ground wire W
G0 connected to a ground terminal land L
G0, and a ground wire W
G2C connected to the ground terminal land L
GC.
The ground wire W
G2 grounds the forward wires Wf extending from the pair of signal terminal lands L
S2+ and L
S2-. The ground wire W
G1 grounds the rearward wires Wr extending from the pair of signal terminal lands L
S1+ and L
S1-. The ground wire W
G0 grounds the forward wires Wf extending from the pair of signal terminal lands L
S0+ and Lso-. The ground wire W
GC grounds the rearward wires Wr extending from the pair of signal terminal lands L
SC+ and L
SC-.
(Terminal, Land, and Wire Configuration)
[0028] Next, the configurations of the terminals, lands, and wires according to the first
embodiment will be described with reference to the drawings. Fig. 5 is an enlarged
perspective view of Fig. 3. Fig. 6 is a plan view illustrating the terminals, lands,
and wires shown in Fig. 5 as viewed from the top face F
TOP. In Fig. 6, the opening 12B of the receptacle 12 is indicated by the double-dot-dash
line.
1. Terminal Configuration
[0029] The multiple top terminals T
TOP include the signal terminal T
S2-, the ground terminal T
G1, and the signal terminal T
S0+. The multiple bottom terminals T
BTM include the pair of signal terminals T
S1+ and T
S1-.
The signal terminal T
S2- is connected to the top face F
TOP of the terminal insulating board 12C and the signal terminal land L
S2-. Specifically, the signal terminal T
S2- has a first top face connection portion 101 connected to the top face F
TOP and a first portion 201 connected to the signal terminal land L
S2-.
[0030] The ground terminal T
G1 is connected to the top face F
TOP of the terminal insulating board 12C and the ground terminal land L
G1. Specifically, the ground terminal T
G1 has a second top face connection portion 102 connected to the top face F
TOP and a second portion 202 connected to the ground terminal land L
G1. The second top face connection portion 102 is provided adjacent to the first top
face connection portion 101 in the perpendicular direction.
The pair of signal terminals T
S1+ and T
S1- is connected to the bottom face F
BTM of the terminal insulating board 12C and the pair of signal terminal lands L
S1+ and L
S1-. Specifically, the pair of signal terminals T
S1+ and T
S1- has a pair of bottom face connection portions 300 and 300 connected to the bottom
face F
BTM and a pair of third portions 203 and 203 connected to the pair of signal terminal
lands L
S1+ and L
S1-.
The signal terminal T
S0+ is connected to the top face F
TOP of the terminal insulating board 12C and the signal terminal land L
S0+. Specifically, the signal terminal T
S0+ has a third top face connection portion 103 connected to the top face F
TOP and a fourth portion 204 connected to the signal terminal land L
S0+. The third top face connection portion 103 is provided adjacent to the second top
face connection portion 102 in the perpendicular direction. The third top face connection
portion 103 is provided opposite to the first top face connection portion 101 with
the second top face connection portion 102 therebetween.
[0031] Here, the second portion 202 is distanced in the extension direction from the first
portion 201. The pair of third portions 203 and 203 is also distanced in the extension
direction from the first portion 201.
Specifically, the second portion 202 is distanced from the opening 12B in the extension
direction further than the first portion 201. The pair of third portions 203 and 203
is closer to the opening 12B in the extension direction than the first portion 201.
The second portion 202 is distanced from the opening 12B further than the pair of
third portions 203 and 203.
2. Land Configuration
[0032] The multiple forward-row lands Lf include the signal terminal land L
S2- and the signal terminal land L
S0+. The multiple forwardmost-row lands Lm include the ground terminal land L
G1. The multiple rear-row lands Lr include the pair of signal terminal lands L
S1+ and L
S1-.
[0033] Here, the ground terminal land L
G1 is distanced in the extension direction from the signal terminal land L
S2-. The pair of signal terminal lands L
S1+ and L
S1- is distanced in the extension direction from the signal terminal land L
S2-.
Specifically, the ground terminal land L
G1 is distanced from the edge portion 11
EDG of the main substrate 11A in the extension direction further than the signal terminal
land L
S2-. The pair of signal terminal lands L
S1+ and L
S1- is closer to the edge portion 11
EDG in the extension direction than the signal terminal land L
S2-. The ground terminal land L
G1 is distanced from the edge portion 11
EDG further than the pair of signal terminal lands L
S1+ and L
S1-. The signal terminal land L
S0+ is provided at approximately the same location in the extension direction as the
signal terminal land L
S2-.
Meanwhile, the signal terminal land L
S1+ is provided between the signal terminal land L
S2- and the ground terminal land L
G1 in the perpendicular direction. The signal terminal land L
S1- is provided between the ground terminal land L
G1 and the signal terminal land L
S0+ in the perpendicular direction. The signal terminal land L
S0+ is provided opposite to the signal terminal land L
S2- in the perpendicular direction with the ground terminal land L
G1 therebetween.
3. Wire Configuration
[0034] A pair of rearward wires Wr
S1+ and Wr
S1- extending from the pair of signal terminal lands L
S1+ and L
S1- is provided between the signal terminal land L
S2- and the signal terminal land L
S0+. The wires in the pair of rearward wires Wr
S1+ and Wr
S1- are disposed on either side of the ground terminal land L
G1 in the perpendicular direction.
4. Other
[0035] The relationship between the signal terminal T
S0-, the ground terminal T
GC, and the signal terminal T
SC+ is the same as the relationship between the signal terminal T
S2-, the ground terminal T
G1, and the signal terminal T
S0+.
Likewise, the relationship between the signal terminal land L
S0-, the ground terminal land L
GC, and the signal terminal land L
SC+ is the same as the relationship between the signal terminal land L
S2-, the ground terminal land L
G1, and the signal terminal land L
S0+ mentioned earlier.
(Actions and Effects)
[0036] (1) The receptacle 12 according to the first embodiment includes the signal terminal
T
S2- (a first top terminal), the ground terminal T
G1 (a second top terminal), and the signal terminal T
S1+ (a bottom terminal). The second portion 202 of the ground terminal T
G1 (a second portion) is distanced in the extension direction from the first portion
201 of the signal terminal T
S2- (a first portion). The third portion 203 of the signal terminal T
S1+ (a third portion) is distanced in the extension direction from the first portion
201 of the signal terminal T
S2-.
In this manner, the first portion 201 is provided at a different location in the extension
direction than the second portion 202 and the third portion 203, and thus the signal
terminal land L
S2- is provided in a different location in the extension direction than the ground terminal
land L
G1 and the signal terminal land L
S1+. For this reason, the rearward wires Wr can be formed with sufficient clearance on
the sides of the signal terminal land L
S2-. Accordingly, it is not necessary to employ a printed wiring board in which fine
wiring patterns can be formed at high densities. As a result, an increase in the cost
of manufacturing the printed wiring board 11 can be suppressed.
[0037] (2) In the receptacle 12 according to the first embodiment, the second portion 202
is distanced from the opening 12B in the extension direction further than the third
portion 203.
For this reason, the ground terminal T
G1, which is included in the multiple top terminals T
TOP, is connected to the printed wiring board 12 at a distance further from the opening
12B than the signal terminal T
S1+ included in the multiple bottom terminals T
BTM. Accordingly, it is not necessary to invert the vertical positions of the ground
terminal T
G1 and the signal terminal T
S1+, and thus the terminal structure can be simplified.
(3) In the receptacle 12 according to the first embodiment, the second portion 202
is distanced from the opening 12B further than the first portion 201 in the extension
direction, and the third portion 203 is closer to the opening 12B than the first portion
201.
For this reason, the configurations of all of the multiple bottom terminals T
BTM can be made the same, and thus the terminal structure can be simplified. In addition,
the wire formation area of the first portion 201 on the side toward the edge portion
11
EDG can be reduced more than in the case where the second portion 202 is provided closer
to the opening 12B than the first portion 201.
[0038] (4) The receptacle 12 according to the first embodiment includes the signal terminal
T
S0+ (a third top terminal). The fourth portion 204 of the signal terminal T
S0+ (a fourth portion) is provided at approximately the same position in the extension
direction as the first portion 201. The third portion 203 of the signal terminal T
S1+ is closer to the opening 12B in the extension direction than the first portion.
For this reason, the rearward wire Wr
S1+, which extends from the signal terminal land L
S1+ to which the third portion 203 is connected, can be disposed between the signal terminal
land L
S2- to which the first portion 201 is connected and the signal terminal land L
S0+ to which the fourth portion 204 is connected. Accordingly, it is not necessary to
employ a printed wiring board in which fine wiring patterns can be formed at high
densities, and thus an increase in the cost of manufacturing the printed wiring board
11 can be suppressed.
(5) The printed wiring board 11 according to the first embodiment includes the signal
terminal land L
S2-, the ground terminal land L
G1, and the signal terminal land L
S1+. The ground terminal land L
G1 is distanced in the extension direction from the signal terminal land L
S2-. The signal terminal land L
S1+ is distanced in the extension direction from the signal terminal land L
S2-.
[0039] In this manner, the signal terminal land L
S2- is provided at a different location than the ground terminal land L
G1 and the signal terminal land L
S1+ in the extension direction, and thus the rearward wires Wr can be formed with sufficient
clearance on the sides of the signal terminal land L
S2-. Accordingly, it is not necessary to employ a printed wiring board in which fine
wiring patterns can be formed at high densities. As a result, an increase in the cost
of manufacturing the printed wiring board 11 can be suppressed.
(6) The ground terminal land L
G1 is distanced from the edge portion 11
EDG of the main substrate 11A in the extension direction further than the signal terminal
land L
S1+.
For this reason, it is not necessary to invert the vertical positions of the ground
terminal T
G1 and the signal terminal T
S1+, and thus the terminal structure can be simplified.
(7) The ground terminal land L
G1 is further from the edge portion 11
EDG in the extension direction than the signal terminal land L
S2-, and the signal terminal land L
S1+ is closer to the edge portion 11
EDG in the extension direction than the signal terminal land L
S2-.
[0040] For this reason, the configurations of all of the multiple bottom terminals T
BTM can be made the same, and thus the terminal structure can be simplified. In addition,
the wire formation area of the signal terminal land L
S2- on the side toward the edge portion 11
EDG can be reduced more than in the case where the ground terminal land L
G1 is provided closer to the edge portion 11
EDG than the signal terminal land L
S2-.
(8) The printed wiring board 11 according to the first embodiment includes the signal
terminal land L
S0+. The signal terminal land L
S0+ is provided at approximately the same location in the extension direction as the
signal terminal land L
S2-. The signal terminal land L
S1+ is closer to the edge portion 11
EDG in the extension direction than the signal terminal land L
S2-.
For this reason the rearward wire Wr
S1+ that extends from the signal terminal land L
S1+ can be disposed between the signal terminal land L
S2- and the signal terminal land L
S0+. Accordingly, it is not necessary to employ a printed wiring board in which fine
wiring patterns can be formed at high densities, and thus an increase in the cost
of manufacturing the printed wiring board 11 can be suppressed.
[Second Embodiment]
[0041] Next, the configuration of a printed wiring board 11 and a receptacle 12 according
to a second embodiment will be described with reference to the drawings. Hereinafter,
the differences from the first embodiment will mainly be described. The difference
from the first embodiment is that the printed wiring board 11 includes multiple rearwardmost-row
lands Ln instead of the multiple forwardmost-row lands Lm.
(Receptacle Configuration)
[0042] First, the configuration of the receptacle according to the second embodiment will
be described with reference to the drawings. Fig. 7 is a perspective view illustrating
the internal configuration of the receptacle 12 according to the second embodiment.
The housing 12A has been omitted from Fig. 7.
In the present embodiment, the ground terminal T
G1 and the ground terminal T
GC are formed so as to be shorter in the extension direction than the other top terminals
T
TOP.
Meanwhile, the vertical positions of the ground terminal T
G1 and the pair of signal terminals T
S1- and T
S1+ are inverted. The vertical positions of the ground terminal T
GC and the pair of signal terminals T
SC- and T
SC+ are inverted.
(Printed wiring board Configuration)
[0043] Next, the configuration of the printed wiring board according to the second embodiment
will be described with reference to the drawings. Fig. 8 is a plan view illustrating
the printed wiring board 11 according to the second embodiment as viewed from the
mounting face F
MNT. Note that in Fig. 8, the locations of the opening 12B and the terminal insulating
board 12C of the receptacle 12 are indicated by the double-dot-dash lines.
[0044] In the present embodiment, the wire group 11B includes the multiple rearwardmost-row
lands Ln.
The multiple rearwardmost-row lands Ln are metal members for connecting the ground
terminal T
G1 and the ground terminal T
GC of the multiple top terminals T
TOP. The multiple rearwardmost-row lands Ln are, as shown in Fig. 8, provided closer
to the edge portion 11
EDG of the main substrate 11A in the extension direction than the multiple rear-row lands
Lr. To rephrase, the multiple rearwardmost-row lands Ln are closer to the opening
12B of the receptacle 12 than the multiple rear-row lands Lr when viewed from above
the mounting face F
MNT.
(Terminal, Land, and Wire Configuration)
[0045] Next, the configurations of the terminals, lands, and wires according to the second
embodiment will be described with reference to the drawings. Fig. 9 is an enlarged
perspective view of Fig. 7.
1. Terminal Configuration
[0046] As shown in Fig. 9, the second portion 202 of the ground terminal T
G1 is closer to the opening 12B (not shown in Fig. 9) in the extension direction than
the pair of third portions 203 and 203 of the pair of signal terminals T
S1+ and T
S1-. The pair of third portions 203 and 203 is closer to the opening 12B in the extension
direction than the first portion 201 of the signal terminal land L
S2-.
[0047] Note that in the present embodiment, the ground terminal T
G1 is disposed passing alongside the pair of signal terminals T
S1- and T
S1+ and below the pair of signal terminals T
S1-and T
S1+. As a result, the vertical positions of the ground terminal T
G1 and the pair of signal terminals T
S1- and T
S1+ are inverted.
2. Land Configuration
[0048] As shown in Fig. 9, the ground terminal land L
G1 is closer to the opening 12B (not shown in Fig. 9) in the extension direction than
the pair of signal terminal lands L
S1+ and L
S1-. The pair of signal terminal lands L
S1+ and L
S1- is closer in the extension direction to the opening 12B than the signal terminal
land L
S2-.
3. Wire Configuration
[0049] The pair of rearward wires Wr
S1+ and Wr
S1- extending from the pair of signal terminal lands L
S1+ and L
S1- is provided between the signal terminal land L
S2- and the signal terminal land Lso+.
4. Other
[0050] The relationship between the signal terminal T
S0-, the ground terminal T
GC, and the signal terminal T
SC+ is the same as the relationship between the signal terminal T
S2-, the ground terminal T
G1, and the signal terminal T
S0+.
Likewise, the relationship between the signal terminal land L
S0-, the ground terminal land L
GC, and the signal terminal land L
SC+ is the same as the relationship between the signal terminal land L
S2-, the ground terminal land L
G1, and the signal terminal land L
S0+ mentioned earlier.
(Actions and Effects)
[0051] (1) The receptacle 12 according to the second embodiment includes the signal terminal
T
S2- (a first top terminal), the ground terminal T
G1 (a second top terminal), and the signal terminal T
S1+ (a bottom terminal). The second portion 202 of the ground terminal T
G1 is distanced in the extension direction from the first portion 201 of the signal
terminal T
S2-. The third portion 203 of the signal terminal T
S1+ is distanced in the extension direction from the first portion 201 of the signal
terminal T
S2-.
[0052] Accordingly, as with the aforementioned first embodiment, an increase in the cost
of manufacturing the printed wiring board 11 can be suppressed.
[0053] (2) In the receptacle 12 according to the second embodiment, the second portion 202
of the ground terminal T
G1 is closer to the opening 12B in the extension direction than the third portion 203
of the signal terminal T
S1+. The third portion 203 is closer to the opening 12B in the extension direction than
the first portion 201 of the signal terminal land L
S2-.
Accordingly, the rearward wire Wr
S1+, which extends from the signal terminal land L
S1+ to which the third portion 203 is connected, can be disposed between the signal terminal
land L
S2- to which the first portion 201 is connected and the signal terminal land L
S0+ to which the fourth portion 204 is connected.
In addition, because it is not necessary to dispose the rearward wire Wr
S1+ to the side of the ground terminal land L
G1, the level of freedom of the wiring pattern can be increased.
[Third Embodiment]
[0054] Next, the configuration of a receptacle 12 according to a third embodiment will be
described with reference to the drawings. Hereinafter, the differences from the second
embodiment will mainly be described. The difference from the second embodiment is
that the pair of signal terminals T
S1- and T
S1+ are twisted by approximately 90 degrees.
[0055] Hereinafter, the pair of signal terminals T
S1- and T
S1+ will be described as an example. However, it should be noted that this configuration
is not limited to the pair of signal terminals T
S1- and T
S1+, and can be applied in the pair of signal terminals T
SC- and Tsc+.
(Terminal Configuration)
[0056] The configuration of the terminals according to the third embodiment will be described
with reference to the drawings. Fig. 10 is an enlarged perspective view illustrating
a pair of signal terminals T
SC- and T
SC+ according to the third embodiment.
Each of the terminals in the pair of signal terminals T
SC- and T
SC+ has a link portion 400 that links the bottom face connection portion 300 (see Fig.
6) and the third portion 203. Each of the terminals in the pair of signal terminals
T
SC- and T
SC+ is twisted by approximately 90 degrees at the link portion 400. Accordingly, a wide
portion 401 and a narrow portion 402 are formed in the link portion 400.
[0057] The wide portion 401 connects to the bottom face connection portion 300. The wide
portion 401 extends from the bottom face connection portion 300 to the outer side
of the bottom face F
BTM. The narrow portion 402 connects to the wide portion 401. The narrow portion 402
extends from the wide portion 401 toward a third connection portion 203.
Here, the wide portion 401 and the narrow portion 402 are formed by twisting plate-shaped
metallic pieces by approximately 90 degrees. Accordingly, a width α of the wide portion
401 is equal to a thickness α of the narrow portion 402. Likewise, a thickness β (<
α) of the wide portion 401 is equal to a width β of the narrow portion 402. Accordingly,
when viewed from the top face F
TOP, the width β of the narrow portion 402 is narrower than the width α of the wide portion
401.
The ground terminal T
G1 is disposed adjacent to the narrow portion 402. As a result, the vertical positions
of the pair of signal terminals T
S1+ and T
S1- and the ground terminal T
G1 are inverted.
(Actions and Effects)
[0058] (1) In the receptacle 12 according to the third embodiment, the signal terminal T
S1+ (a bottom terminal) includes the wide portion 401 and the narrow portion 402. When
viewed from the top face F
TOP, the width β of the narrow portion 402 is narrower than the width α of the wide portion
401.
[0059] Accordingly, it is easier to secure space for disposing the ground terminal T
G1 next to the narrow portion 402. As a result, the ground terminal T
G1 and the signal terminal T
S1+ can be disposed in a linear manner. Accordingly, it is easier to achieve a more simplified
terminal structure.
[Fourth Embodiment]
[0060] Next, the configuration of a receptacle 12 according to a fourth embodiment will
be described with reference to the drawings. Hereinafter, the differences from the
second embodiment will mainly be described. The difference from the second embodiment
is that the vertical positions of the ground terminal T
G1 and the signal terminal T
S1+ are inverted within the terminal insulating board 12C.
(Receptacle Configuration)
[0061] The configuration of the receptacle 12 according to the fourth embodiment will be
described with reference to the drawings. Fig. 11 is a perspective view illustrating
the ground terminal T
G1 and the pair of signal terminals T
S1+ and T
S1- according to the fourth embodiment.
[0062] The terminal insulating board 12C is configured of three substrates that are stacked
(a top substrate 121, a middle substrate 122, and a bottom substrate 123). Each of
the three substrates has multiple via holes VH formed therein in a predetermined pattern.
The inner walls of the multiple via holes VH are plated with a conductive material.
As a result, via wires 301 are formed.
Fig. 12 is a see-through perspective view illustrating the terminal insulating board
12C according to the fourth embodiment.
The ground terminal T
G1 includes the second top face connection portion 102 and a first inner layer portion
310. The inner layer portion 310 is connected to the second top face connection portion
102 on the top face F
TOP. The inner layer portion 310 is inserted into the terminal insulating board 12C from
the top face F
TOP to the bottom face F
BTM.
The inner layer portion 310 is configured of a via wire 301a that passes through the
top substrate 121, the middle substrate 122, and the bottom substrate 123.
[0063] The signal terminal T
S2+ includes the bottom face connection portion 300 and a second inner layer portion
320. The second inner layer portion 320 is configured of a via wire 301b, a via wire
301c, and an internal wire 302. The via wire 301b is connected to the bottom face
connection portion 300 on the bottom face F
BTM. The via wire 301b passes through the bottom substrate 123. The via wire 301b passes
through the top substrate 121 and the middle substrate 122. The internal wire 302
is formed between the middle substrate 122 and the bottom substrate 123. The internal
wire 302 connects the via wire 301b and the via wire 301c.
As a result, the vertical positions of the ground terminal T
G1 and the signal terminal T
S1+ are inverted within the terminal insulating board 12C.
(Actions and Effects)
[0064] In the receptacle 12 according to the fourth embodiment, the signal terminal T
S1+ includes the inner layer portion 310, and the ground terminal T
G1 includes the inner layer portion 320.
[0065] Accordingly, the vertical positions of the ground terminal T
G1 and the signal terminal T
S1+ are inverted within the terminal insulating board 12C, and thus it is not necessary
to cause the ground terminal T
G1 and the signal terminal T
S1+ to intersect. For this reason, the terminal structure with respect to the ground
terminal T
G1 and the signal terminal T
S1+ can be further simplified.
(Other Embodiments)
[0066] Although the present invention has been described according to the aforementioned
embodiments, it is to be understood that the descriptions and drawings of which this
disclosure is made up are not intended to limit the invention. Various alternative
embodiments, working examples, and operational techniques should be clear to a person
skilled in the art based on this disclosure.
- (1) Although the aforementioned embodiments have described the configurations of terminals
and lands using the drawings, the present invention is not limited to the descriptions
therein. The second portion 202 and the third portion 203 can each be altered in various
ways as long as they are distanced from the first portion 201 in the extension direction.
- (2) Although the narrow portion 402 is described in the third embodiment as being
formed through a twisting process, the formation of the narrow portion 402 is not
limited thereto. For example, the narrow portion 402 may be formed through a cutting
process or the like as well. Note, however, that it is preferable for the width to
gradually decrease in the direction from the wide portion 401 to the narrow portion
402 at the border between the wide portion 401 and the narrow portion 402. Furthermore,
it is preferable for the thickness to gradually increase in the direction from the
wide portion 401 to the narrow portion 402 at the border between the wide portion
401 and the narrow portion 402.
- (3) Although the aforementioned embodiments have described the terminal insulating
board 12C as being such that the multiple rear-row lands Lr and the multiple forward-row
lands Lf do not overlap when viewed from above, the present invention is not limited
thereto. In the terminal insulating board 12C, the multiple rear-row lands Lr and
the multiple forward-row lands Lf may overlap when viewed from above.
- (4) Although the aforementioned embodiments have described an interface based on the
HDMI standard as an example of an interface between electronic devices, the present
invention is not limited to this interface. For example, a serial interface based
on a standard such as USB (Universal Serial Bus), DVI (Digital Visual Interface)®,
or IEEE (Institute of Electrical and Electronic Engineers) 1394 can be used as the
interface between the electronic devices.
- (5) Although the aforementioned embodiments have described the signal terminals TS as transmitting signals according to a quasi-differential transmission system based
on TMDS or the like, the present invention is not limited thereto. For example, the
signal terminals TS may transmit signals according to a differential transmission system based on the
USB standard.
- (6) Although not particularly discussed in the aforementioned embodiments, the widths
of the signal terminals TS, the widths of the ground terminals TG, and the distances between the signal terminals TS and the ground terminals TG can be set as appropriate. Doing so makes it possible to adjust the characteristic
impedance of the lines.
[0067] Thus it goes without saying that the present invention includes various other embodiments
not described here. Accordingly, the technical scope of the present invention is to
be defined only by the invention-defining matters according to the scope of claims
pursuant to the above descriptions.
INDUSTRIAL APPLICABILITY
[0068] According to the receptacle, printed wiring board, and electronic device of the present
embodiment, an increase in the cost of manufacturing the printed wiring board can
be suppressed, and thus the present invention is useful in the field of electronic
devices.
EXPLANATION OF REFERENCE
[0069]
- 10
- interface
- 11
- printed wiring board
- 11A
- main substrate
- 11B
- wire group
- 11EDG
- edge portion
- 12
- receptacle
- 12A
- housing
- 12B
- opening
- 12C
- terminal insulating board
- 12D
- terminal group
- 13
- plug
- SMNT
- mounting face
- STOP
- top face
- SBTM
- bottom face
- TTOP
- top terminal
- TBTM
- bottom terminal
- Ts
- signal terminal
- TG
- ground terminal
- Wr
- rearward wire
- Wf
- forward wire
- WG
- ground wire group
- L
- land
- Lr
- rear-row land
- Lf
- forward-row land
- Lm
- forwardmost-row land
- Ln
- rearwardmost-row land